I wanted to pick your guy's brains. I am trying to help out a friend with his 6497. It is rattling inside the movement. I have decased it, removed the hands and dial as well as the movement ring and there is still very much metal clunking around in there. I have checked all the screws and everything is in place and tight. This is the kicker - it still runs. Like a champ. But it is loud inside the movement lol. Any ideas. Any and ALL welcome!! Thanks.